SISCA OM fit report
Data Scenario and Model Hypothesis
Standard fit report for fits of SISCA to WCVI_Herring data.
Data Scenario: WCVI_agg
Model Hypothesis: baseAggModel
Species:
Stocks:
Final phase convergence diagnostics
Max Gradient: 0.0212524
Objective Function value: 4.5404989^{4}
Time to fit model: 1
PD Hessian: FALSE
No. of Non-finite SEs: 0
Model fits
At-a-glance
Figure 1: Time series of spawning biomass with scaled spawn indices (top), recruitments (second row), natural mortality (third row), and harvest rates (bottom row) for substocks of WCVI_Herring. Stocks are, from left to right,WCVI.
Fits to data
Figure 2: Model fits to spawn indices.
Figure 3: Probability of detection of a spawning event, with respect to spawning stock biomass. Lines show the modeled probability and the points indicate whether a spawn was detected, with 0 for no spawn detected, and 1 for a positive index.
Figure 4: Average model fits to age data. Stocks are left to right, and gears are top to bottom.
Figure 5: Model fits to age data, averaged over stock and time. Gears are top to bottom.
| \(\tau^{age}_{Red}\) | \(\tau^{age}_{SR}\) | \(\tau^{age}_{Gn}\) | \(\tau^{surv}_{Su}\) | \(\tau^{surv}_{D}\) | |
|---|---|---|---|---|---|
| WCVI | 0.754 | 0.485 | 0.669 | 0.5 | 0.5 |
Recruitment
Figure 6: Age-1 recruitments for all stocks. Equilibrium unfished recruitment \(R_0\) is indicated by the horizontal dashed line. Second row shows recruitment residuals on the log scale, with the average of estimated residuals shown by the horizontal red dashed line.
Figure 7: Stock-recruit curves (solid lines) and modeled recruitments (coloured points)
Natural Mortality
Figure 8: Mt
Figure 9: densityDependent M
Figure 10: Total natural mortality at age
Figure 11: Total mortality at age
Selectivity and Catch
Figure 12: Catch in biomass units for each stock (rows). Stacked bars show the total yearly catch for each commercial fleet, and the dead ponded fish shown with a red border.
Figure 13: Catch in biomass units for each stock (rows). Stacked bars show the total yearly catch for each commercial fleet, and the dead ponded fish shown with a red border.
Figure 14: Catch in biomass units for each stock (rows). Stacked bars show the total yearly catch for each commercial fleet, and the dead ponded fish shown with a red border.
Figure 15: Selectivity-at-age for each fleet (rows). Aggregate stock average selectivity curves are shown as thick grey lines, while sub-stock specific estimates are shown as dashed thin coloured lines.
Reference Points
Yield Curves
Figure 16: Equilibrium yield curves as a function of fishing mortality rates, assuming all fishing mortality comes from the gillnet fleet.
Stock specific fits
WCVI
Age composition fits
Figure 17: Model fits to yearly WCVI stock age compositions for the reduction fleet. Grey bars are age composition observations, and lines/points are the model expected values.
Figure 18: Model fits to yearly WCVI stock age compositions for the seineRoe fleet. Grey bars are age composition observations, and lines/points are the model expected values.
Figure 19: Model fits to yearly WCVI stock age compositions for the gillnet fleet. Grey bars are age composition observations, and lines/points are the model expected values.
Figure 20: Age composition residuals for the WCVI sub-stock. Positive residuals are black black, while negative residuals are red.
Age composition post tail compression
Figure 21: Model fits to tail compressed yearly WCVI stock age compositions for the reduction fleet. Grey bars are age composition observations, and lines/points are the model expected values.
